Papers Expects to replace Evince as GNOME Default PDF Viewer
Quoting: Papers Expects to replace Evince as GNOME Default PDF Viewer | UbuntuHandbook —
As you may know, GNOME is moving to GTK4 + LibAdwaita in recent years. Core apps are either ported to the new frameworks or replaced with new ones.
GNOMOE Text Editor, GNOME Camera, GNOME Console, and Loupe replaced Gedit, Cheese, GNOME Terminal, and Eyes of GNOME as default text editor, camera app, terminal, and image viewer. And, it introduced Decibels as new core app for playing audio files.
Now Papers enters GNOME Incubator, expects to replace Evince as default PDF and Document viewer.